Electrochemical gas sensors, infrared gas sensors, and catalytic combustion gas sensors all output tiny analog signals. Generally, users cannot directly utilize these sensors. Therefore, Shenzhen Huayi Environmental Protection Technology has developed a relatively independent miniature digital intelligent unit. This unit outputs signals via analog 0-5V/4-20mA and digital serial port signals.
Integrated sensor modules achieve functionality through data transmission or receiving instructions, including calibration, compensation for drift and non-linearity, zero-point temperature drift compensation, parameter settings, internal parameter settings, and test data output. The use of integrated sensor modules brings significant improvements, first with an automatic diagnostic function that performs self-checks upon power-up to determine if the module is faulty; secondly, calibration can be performed online based on usage time, with the microprocessor utilizing calibration data stored in EPROM for comparison and adjustment.
The Integrated Sensor Module series is a new type of smart sensor designed for manufacturers of gas detectors. It primarily addresses the issues of numerous gas detection types, incompatibility among various sensor models, complex production calibration, and limited replacement of core components. With the adoption of intelligent sensors, a single product can be developed to swiftly cater to customers' needs for different gas detection types, simplifying the production process, eliminating the need for recalibration, significantly reducing the company's research and development and production costs, and immediately enhancing the product quality to international standards.
Technical Specifications
Product Name:
1) Working Voltage: DC5V ±1%
2) Operating Current: ≤50mA (Catalytic ≤100mA)
3) Gas Measurement: A certain gas
4) Installation Method: 7-pin plug-in style
5) Measurement Range: 0-1/20/100/2000 ppm
6) Detection Principle: Electrochemical
7) Resolution: 0.01, 0.1, 0.5, 1 ppm
8) Response Time: <30s
9) Sampling Accuracy: ±2%FS
10) Preheat Time: 30s
11) Repeatability: ±1%FS
12) Long-term Zero Drift: ≤1%FS/year
13) Operating Temperature: -20～70℃
14) Working Humidity: 10~95%RH (no condensation)
15) Storage Temperature: -40～70℃
16) Working Pressure: 86kPa ~ 106kPa
17) Housing Material: Aluminum Alloy
18) Output Interface: 7-Pin
19) Service Life: Over 2 years (based on sensor service life)
20) Warranty Period: 1 Year
21) Digital Signal Format: Data Bits: 8; Stop Bits: 2; Parity: None
22) Baud Rate: 9600
23) Output Voltage: 0.4-2.0VDC (standard), 4-20mA, TTL optional
24) Dimensions: 4NE Φ21.5*31mm (excluding pins); 7NE Φ31.5*31mm (excluding pins)
Feature Highlights:
Patented standard interface, simply replace with different types of sensors to create various types of detectors.
2. Intrinsically safe design, capable of live plug and unplug with heat
3. Original imported, compatible with various sensors including infrared, electrochemical, catalytic, and semiconductor.
4. Self-contained temperature compensation, factory precision calibration, no further calibration required upon use.
5. Features of simultaneous voltage and serial port output, convenient for customer debugging and usage.
6. Simplified peripheral circuitry, easy production and operation
Sensor Installation:
The intelligent gas sensor is designed with 7 pins and is installed in the sensor socket by a plug-and-play method. To ensure a reliable connection, it is recommended to use the socket. The sockets should be arranged according to the corresponding pins, installed vertically, and焊接 securely. Upon the customer's special requirements, the pin plug-and-play method can be omitted, and an external wiring method can be adopted, with the wire length generally not exceeding 150mm. In non-explosion-proof locations, hot-plugging can be performed with power. In work environments with explosion-proof requirements, the power supply to the equipment connected to the sensor must be turned off before installation.
